Self-adjusting hairpin



J. W. GREENBOWE. SELF A-DJUSHNG HAIRPIN. APPLICATION FILED JUNE 24.1916. RENEWED JUNE 25.1919.

Patented Feb. 17,1920.

will therefore be seen JAMES WALTER GREENBOWE, 0F WEEI-IAWKEN, NEWJERSEY.

SELF-ADJUSTING HAIRPIN.

Application filed J'une'24, 1916, Serial No. 105,561.

(1 To all whom it may concern:

Be it known that 1, JAMES WALTER GREEN- sown, a citizen of the UnitedStates, residing at 4:01 Gregory avenue, Weehawken, county of Hudson,and State of New Jersey, have invented certain new and usefulImprovements in Self-Adjusting Hairpins,

fully described and represented in the following specification and theaccompanying drawings, forming a part of the same.

This invention relates to ladies hair pins of the bifurcated or forkedtype and especially to those made of celluloid or other plasticmaterial.

Great annoyance is caused by the insecurity of pins in a womanscoiifure, as the heat of the head very often reduces the elasticity inthe bend or loop of the pin and the tines separate and their hold uponthe strands of hair is thereby released.

The object of this invention is to provide a pin that will retain itselasticity and not spread, and a peculiar result of the construction isthat when the pin becomes heated by the warmth of the hair the tinesmove into closer relation to one another, instead of away from eachother. Thus as the pin becomes warm, it is held more firmly in the hairthan when first inserted.

This object is attained in the following manner: I reinforce the bend orloop of the pin with a supplemental spring of metal or other substance,not liable to be weakened by the heat of the head. The spring is made ofsuch strength as to hold the position required for easy the tines 1napplication to the head dress, but exerting .some pressure upon thetines near the bend.

Thus when the pin is cold the sprin serves to strengthen the loop of thepin. omen often spread the tines apart when applying the pin to thehair, permitting the tmes, when the pin is in place, to return to theirnormal position and thus grasp the strands of hair over which they arestraddled. It that if the pin loses its elasticity its grip on the hairwill be lost, but when equipped with the reinforcing spring the tinesalways retain the force to bring them together. Furthermore, it will bereadilyunderstood that when the plastic material of the pin loses itselasticity at the loop, the reinforcing spring is released from anyresistance of the material in the loop,

and consequently tends to press the tines to- Speciflcation of LettersPatent.

Patented Feb. 17, 1920.

Renewed June 25, 1919. Serial No. 306,661.

ward each other and hold the pin securely in the head-dress.

The invention will be understood by reference to the annexed drawing inwhich Figure 1 is a side view of the pin; Fig. 2 is a side view of thepin with a portion broken away showing an alternative method of securingthe spring; Fig. 3 is a section taken on line 3-3 in Fig. 2; Fig. 1 is asection taken on line 14: in Fig. 1; Fig. 5 is a side View of the springof Fig. 1, and Fig. 6 is a side view of a pin having the spring formedof a spiral coil.

A is the pin, B a supplemental reinforc ing spring of loop form, securedto the loop 0. of the pin by suitable means, as ears I) in Fig. 1; saidears being bent partly around the loop a of the pEin (see Fig. 4:) tohold the spring thereon. ig. 2 shows the spring B in the form of a roundwire loop having its ends I) held by notches b in the pin, such wire maybe sunk into the pin to make a flush surface, (see Fig. 3). In Fig. 6 isshown, wrapped around the loop a, a spiral spring 13 and may be coveredwith a soft covering as indicated by the dotted lines 0, or filled inwith some plastic material to form a smooth surface. A spring loop suchas shown in Fig. 2 may be used by having same wholly inclosed or moldedin the bend or loop. I

It is obvious that other constructions may be used, as my inventionrelates to a reinforcing spring, whatever its construction, incombination with the bend or loop of the hair-pin.

Having thus set forth my invention what is claimed herein is 1. A forkedhair pin having a resilient reinforcing member seated in a longitudinaldepression in the surface of the loop of the hair pin and operating tohold the tines in the desired relation to each other.

2. A forked hair pin having an immovable supplemental spring loop seatedin the inner surface of the loop of the hair pin and adapted to hold thetines in close relation to one another.

3. A forked hair pin composed of celluloid or other plastic materialhaving a fixed supplemental spring metal loop seated in a depression inthe inner surface of the loop of the hair pin and operating to hold thetines in the desired relation to each other.

4.. A forked hair pin having a resilient reinforcing member immovablysecured sion so that its outer surface Will be con- Within the loop ofthe hair pin against the tinuous with the adjacent external surfaceconcave surface thereof. of the pin. 10 5. A non-metallic hair pinhaving a longi- In testimony whereof I have hereunto set 5 tudinaldepression in the inner surface of my hand.

the loop of the hair pin and a spring metal reinforcing member seated insaid depres- JAMES WALTER GREENBOWE.

